Source Normalized Impact per Paper (SNIP):2016: 0.567SNIP measures contextual citation impact by weighting citations based on the total number of citations in a subject field.

Impact per Publication (IPP): 0.588

Impact per Publication (IPP):2016: 0.588The Impact per Publication measures the average number of citations received in a particular year by papers published in the journal during the three preceding years.

SCImago Journal Rank (SJR): 0.277

SCImago Journal Rank (SJR):2016: 0.277SJR is a prestige metric based on the idea that not all citations are the same. SJR uses a similar algorithm as the Google page rank; it provides a quantitative and a qualitative measure of the journal’s impact.

Cite Score: 0.51

Cite Score:2016: 0.51CiteScore metrics are a new standard to measure serial citation impact.

SIMULTANEOUS REVERSE-PHASE ULTRA PERFORMANCE LIQUID CHROMATOGRAPHY METHOD DEVELOPMENT AND VALIDATION FOR ESTIMATION OF GRAZOPREVIR AND ELBASVIR

Madhavi S, Prameela Rani A

Abstract

Objective: The objective of this study was to develop and validate rapid, specific, sensitive, and precise reverse-phase ultra performance liquid chromatography (RP-UPLC) method for the quantitative determination of grazoprevir and elbasvir, as there are no official monograph and no analytical method by UPLC.

Methods: Chromatographic separation was achieved on a Waters Acquity UPLC HSS C18 (2.1 mm × 100 mm, 1.8 micron) column with a 45:55 (v/v) mixture of 0.1% orthophosphoric acid (pH 2.8) and acetonitrile as a mobile phase, thermostated at 30°C with a short run time of 3.0 min.

Results: The retention times were 0.73 and 1.29 min for grazoprevir and elbasvir, respectively. Quantification is achieved with TUV detection at 254 nm over the concentration range of 25–150 μg/ml for grazoprevir and for elbasvir 12.5–75 μg/ml, with a correlation coefficient of 0.999 and 0.999, respectively. The developed method was validated according to the International Conference on Harmonization (ICH) guidelines with respect to linearity, accuracy, precision, specificity, and robustness. Forced degradation study was extended out under acidic, alkaline, oxidative, photolytic, and thermal conditions to demonstrate the stability-indicating capability of the developed UPLC method. The degradation products were well resolved from the main peak, thus proved the stability-indicating power of the method. The results of the analysis were validated statistically.

Conclusion: The method is precise, accurate, linear, robust, and fast. The short retention time allows the analysis of a large number of samples in a short period of time and, therefore, should be cost-effective for routine analysis in the pharmaceutical industry.

Sunnis MC, Rajput AP. Development and validation of a new stability indicating analytical method for the determination of related components of brimonidine tartrate in drug substances and drug product using apples. Int J Pharm Pharm Sci 2011;3:145-50.